Troubleshooting a Clutch Fault (Mazda Capella GC)

The pedal fails - there is no pressure or very little resistance

• The clutch cable broke (Section 8)
• The automatic clutch pedal adjustment mechanism is faulty (Section 8)
• The release bearing or clutch release fork is damaged (Section 8)
• The diaphragm spring in the clutch pressure plate is damaged (Section 8)

The clutch does not disengage (unable to change gear)

• The automatic clutch pedal adjustment mechanism is faulty (Section 8)
• The clutch friction disc is seizing on the grooves of the transmission input shaft (Section 8)
• The clutch friction disc has become stuck to the flywheel or pressure plate (Section 8)
• The pressure plate assembly is faulty (Section 8)
• The transmission input shaft is jammed in the crankshaft bearing (Section 2)
• The clutch release mechanism is worn out or improperly assembled (Section 8)

Clutch slippage (increasing engine speed without increasing vehicle speed)

• The automatic clutch pedal adjustment mechanism is faulty (Section 8)
• Clutch disc linings are excessively worn (Section 8)
• Clutch disc linings are contaminated with oil or grease (Section 8)
• Defective pressure plate or weak diaphragm spring (Section 8)

Intense vibration when engaging the clutch

• Clutch disc linings are contaminated with oil or grease (Section 8)
• Clutch disc linings are excessively worn (Section 8)
• The clutch cable is worn out or jammed (Section 8)
• The pressure plate or diaphragm spring is defective or deformed (Section 8)
• Engine or gearbox mounts are worn or loose (Section 2)
• The clutch disc hub or gearbox input shaft grooves are worn out (Section 8)

Noise when pressing or releasing the clutch pedal

• The release bearing is worn out (Section 8)
• Clutch pedal bushings are worn or not lubricated (Section 8)
• The pressure plate assembly is defective (Section 8)
• The diaphragm spring of the pressure plate is damaged (Section 8)
• The clutch disc springs are damaged (Section 8)